首页
外语
计算机
考研
公务员
职业资格
财经
工程
司法
医学
专升本
自考
实用职业技能
登录
考研
Mammals vary enormously in size, from weighing less than a penny to measuring more than three school buses in length. Some group
Mammals vary enormously in size, from weighing less than a penny to measuring more than three school buses in length. Some group
admin
2017-02-17
23
问题
Mammals vary enormously in size, from weighing less than a penny to measuring more than three school buses in length. Some groups of mammals have become very large, such as elephants and whales,【C1】______others have always been small, like primates. A new theory developed by an international team, led by Jordan Okie,【C2】______an explanation for why and how【C3】______groups of organisms are able to evolve【C4】______sizes, whereas others are not.
The research team【C5】______information on how quickly an individual animal grows and used it to【C6】______how large it may get【C7】______evolutionary time. Their research was published recently.
The new theory developed from the observation that some animals【C8】______fast and die young, while others take their time and mature much later. "Fast" animals-such as mice—breed very quickly, while humans mature slowly and are relatively older when they first have children. The theory【C9】______that those species that are relatively faster are more likely to evolve a large size quicker than slow species, and that their maximum size will be greater.
The research team tested their theory using the【C10】______records of mammals over the last 70 million years, examining the maximum size of each mammal group【C11】______that time, including whales, elephants, seals and primates. They found that their theory was very well【C12】______.
"Primates have evolved very slowly, and never got bigger than 1,000 pounds," said Okie, "The【C13】______was true of whales, which evolved their large size at the fastest【C14】______recorded."
The theory also makes predictions about the relative risks of extinction for large animals【C15】______small. The maximum size of an animal is limited by the rate of mortality in the【C16】______. Because larger animals【C17】______breed less frequently than smaller animals,【C18】______the mortality rate doubles, the maximum size is predicted to be 16 times smaller.
"This is a really surprising【C19】______," said Okie. "It points to another reason why many of the large animals went【C20】______after the last Ice Age, and their high risk of extinction in modern environments."
【C15】
选项
A、compared to
B、referred to
C、dealt with
D、associated with
答案
A
解析
上下文多次提到大型动物与小型动物有哪些不同,因此所填入的词语应该能体现两者的对比。故选A项compared to“与……相比”。
转载请注明原文地址:https://kaotiyun.com/show/dtEZ777K
0
考研英语一
相关试题推荐
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
WhatdoRussia’sBelgorodprovinceandsomeschoolsinFloridaandConnecticuthaveincommon?Theyareunlikelyrecruitstothe
IfAmericanmedicinewereapatient,hewouldweigh350poundsandbegainingfast.Despitebeingrepeatedlycounseledaboutthe
Nearlythree-quarteroftheEarthiscoveredwithwater.The【B1】______ofthecontinents,especiallyinthetemperatezones,isv
Nearlythree-quarteroftheEarthiscoveredwithwater.The【B1】______ofthecontinents,especiallyinthetemperatezones,isv
随机试题
李斯在《谏逐客书》中说:“太山不让土壤,故能成其大;河海不择细流,故能就其深;王者不却众庶,故能明其德。”这里所采用的修辞手法和论证方法不包括()
A.脂肪坏死B.液化性坏死C.两者皆有D.两者皆无中枢神经系统的坏死常常表现为
崩漏的主要病因是
下列除哪项外,均可使用培元补肾法()
A.国家食品药品监督管理部门B.省级食品药品监督管理部门C.省以上食品药品监督管理部门D.设区的市食品药品监督管理部门E.直辖市设的县食品药品监督管理部门负责GSP认证
生态影响调查结论是全部调查工作的结论,编写时重点概括说明(),在此基础上,对环境保护措施提出改进措施和建议。
在规定装运期条文时,如使用了“立即装运”、“即刻装”、“尽速装运”或类似词句者,按《UCP600》规定,银行将不予置理。()
公司债券的违约风险一般通过()标示。
资产负债表日,提供劳务结果不能可靠估计,且已经发生的劳务成本预计部分能够得到补偿的,应按能够得到部分补偿的劳务成本金额确认劳务收入,并结转已经发生的劳务成本。()(2013年)
Onetypeofpersonthatiscommoninmanycountriesistheonewhoalwaystriestodoaslittleaspossibleandtogetasmuch【C
最新回复
(
0
)